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Several important proposals to use semiconductor quantum dots in quantuminformation technology rely on the control of the dark exciton ground states,such as dark exciton based qubits with a $\mu$s life time. In this paper, wepresent an efficient way to occupy the dark exciton ground state by a singleshort laser pulse. The scheme is based on an optical excitation with alongitudinal field component featured by, e.g., radially polarized beams orcertain Laguerre-Gauss or Bessel beams. Utilizing this component, we showwithin a configuration interaction approach that high-energy exciton statescomposed of light-hole excitons and higher dark heavy-hole excitons can beaddressed. When the higher exciton relaxes, a dark exciton in its ground stateis created.

Dark Exciton Preparation in a Quantum Dot by a Longitudinal Light Field Tuned to Higher Exciton States